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논문 기본 정보

자료유형
학술저널
저자정보
유지현 (충북대학교) Dae-Young Lee (Department of Astronomy and Space Science Chungbuk National University) 김어진 (한국과학기술원 인공위성연구소) Hoonkyu Seo (Korea Advanced Institute of Science and Technology) KWANG-SUN RYU (Korea Advanced Institute of Science and Technology) Kyung-Chan Kim (Department of Astronomy and Space Science Chungbuk National University) 민경욱 (한국과학기술원) Jongdae Sohn (Korea Astronomy and Space Science Institute) Junchan Lee (Korea Advanced Institute of Science and Technology) Jongho Seon (KAIST) Junchan Lee (Korea Advanced Institute of Science and Technology) Jongho Seon (Kyung Hee University) Kyung-In Kang (Korea Advanced Institute of Science and Technology) Seunguk Lee (Department of Astronomy and Space Science Chungbuk National University) 박재흥 (한국천문연구원) Goo-Hwan Shin (Korea Advanced Institute of Science and Technology) Sung-Og Park (Satellite Technology Research Center KAIST)
저널정보
한국우주과학회 Journal of Astronomy and Space Sciences Journal of Astronomy and Space Sciences 제38권 제1호
발행연도
2021.1
수록면
31 - 38 (8page)

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In this paper, we present observations of the Space Radiation Detectors (SRDs) onboard the Next Generation Small Satellite-1 (NEXTSat-1) satellite. The SRDs, which are a part of the Instruments for the study of Stable/Storm-time Space (ISSS), consist of the Medium-Energy Particle Detector (MEPD) and the High-Energy Particle Detector (HEPD). The MEPD can detect electrons, ions, and neutrals with energies ranging from 20 to 400 keV, and the HEPD can detect electrons over an energy range from 0.35 to 2 MeV. In this paper, we report an event where particle flux enhancements due to substorm injections are clearly identified in the MEPD A observations at energies of tens of keV. Additionally, we report a specific example observation of the electron distributions over a wide energy range in which we identify electron spatial distributions with energies of tens to hundreds of keV from the MEPD and with energy ranging up to a few MeV from the HEPD in the slot region and outer radiation belts. In addition, for an ~1.5-year period, we confirm that the HEPD successfully observed the well-known outer radiation belt electron flux distributions and their variations in time and L shell in a way consistent with the geomagnetic disturbance levels. Last, we find that the inner edge of the outer radiation belt is mostly coincident with the plasmapause locations in L, somewhat more consistent at subrelativistic energies than at relativistic energies. Based on these example events, we conclude that the SRD observations are of reliable quality, so they are useful for understanding the dynamics of the inner magnetosphere, including substorms and radiation belt variations.

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